Submission #1017220

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017220		AmirAli_H1	Boxes with souvenirs (IOI15_boxes)	C++17	100 / 100	473 ms	296844 KiB

boxes

// In the name of Allah

#include <bits/stdc++.h>
#include "boxes.h"
using namespace std;

typedef		long long int			ll;
typedef		long double				ld;
typedef		pair<int, int>			pii;
typedef		pair<ll, ll>			pll;
typedef		complex<ld>				cld;

#define		all(x)					(x).begin(),(x).end()
#define		len(x)					((ll) (x).size())
#define		F						first
#define		S						second
#define		pb						push_back
#define		sep						' '
#define		endl					'\n'
#define		Mp						make_pair
#define		kill(x)					cout << x << '\n', exit(0)
#define		set_dec(x)				cout << fixed << setprecision(x);
#define		file_io(x,y)			freopen(x, "r", stdin); freopen(y, "w", stdout);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int maxn = 1e7 + 4;
const ll oo = 1e18 + 4;
ll dp[maxn], val[maxn]; deque<int> dq;

ll delivery(int N, int K, int L, int p[]) {
	for (int i = 0; i <= N; i++) {
		while (!dq.empty() && dq.front() < i - K) dq.pop_front();
		
		if (i == 0) dp[i] = 0;
		else dp[i] = val[dq.front()] + min(p[i - 1], L - p[i - 1]) - (L - p[i - 1]);
		
		if (i < N) val[i] = dp[i] + min(p[i], L - p[i]) + (L - p[i]);
		else val[i] = oo;
		
		while (!dq.empty() && val[dq.back()] >= val[i]) dq.pop_back();
		dq.pb(i);
	}
    return dp[N];
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 30 / 30